Wastes that ends up in the landfill releases a significant amount of methane. Methane is one of the most powerful greenhouse gas emission and it’s worse than carbon dioxide. Food continues to pile up in the landfill creating a remarkable of 3.3 billion tons of greenhouse emission. The methane accelerating impacts climate change and global warming. Climate change can affect the world from wildfires to extreme weathers like hurricanes.
Not only does the fact that the worsening quality of air and water impact those who live in these megacities, but it also greatly affects our planet as a whole. Although these megacities are booming industrial and business centers, they are doing more harm than good to the environment. Megacities are having such an impact on the environment because they are using much more resources in general. These megacities are needed to produce/consume more food, water, and electricity than others areas around the world. Such an increase in demand is leading to other areas having decreased amount of resources.
Absorbance measurements were read at 517 nm, after 20 min of incubation time at room temperature (A1). Absorption of a blank sample containing the same amount of methanol and DPPH solution acted as the negative control (A0). The percentage inhibition [(A0–A1/A0)*100] was plotted against phenol content and IC50 was determined. 2.11.Scavenging activity of ABTS radical
Solid waste management is an emerging issue as the world’s municipalities become increasingly affected by the huge generation of waste. According to the UNEP (2010), Municipal Solid Waste (MSW) generated worldwide an estimated 1.7 – 1.9 billion metric tons of waste. Rapid urbanization, industrialization and economic development are responsible for increased volumes of municipal solid waste. As a result, municipalities - typically the level of government responsible for waste management in cities - must provide effective and efficient solid waste services to their inhabitants. They often face problems beyond the ability of municipal authorities to tackle the problem (Sujauddin et al, 2008).
Overcrowding is a logical consequence of over-population in urban areas. It is naturally expected that cities having a large size of population squeezed in a small space must suffer from overcrowding. This is well exhibited by almost all the big cities of India. For example, Mumbai has one-sixth of an acre open space per thousand populations though four acre is suggested standard by the Master Plan of Greater Mumbai. Metropolitan cities of India are overcrowded both in ‘absolute’ and ‘relative’ terms.
Metro Manila’s development has caused its air quality to deteriorate with the introduction of diesel-powered engines and such, and may cause cardiovascular disease. The pollution in Metro Manila is caused by two things. First is the exhaust from motor vehicles. Second, the emissions from factories and even hotels in Metro Manila (Roces, 2002). The significant amount of buses that can be found roaming around the roads of Metro Manila may be responsible for thousands of premature deaths every year (Vidal, 2014).
has naturally increased because of the rapid expansion of the human race. The sizes of cities are increasing day by day summing up to an increase in sewage, cleaning, construction and manufacturing. These activities lead to over consumption and contamination of water. Water pollution, Air pollution and Land pollution have really had a hard impact on water as toxic wastes from industries/factories and mining activities get transferred to local water bodies. Some people throw their trash into rivers and lakes nearby and also wash themselves in the same water leading to unhygienic water and an increase in disease.
ABSTRACT Over the years, Environmental pollution has been seen an epidemic growth. It is increasing day by day due to large number of industries and automobiles. Many human activities are responsible for increasing environmental pollution. This report demonstrates that environmental pollution has bad impact of human, plants and animals. Moreover, how this is affected our environment and as well as other organisms.
2. Discharge of solid waste and sewage disposal. Nearly 4,000 to 4,500 tons of solid waste are being disposed into river system and low-lying areas. Due to lack of treatment, nearly 500 hospitals in the capital city of Dhaka dispose solid waste (M Shehab Ullah,
1. INTRODUCTION 1.1 Background and Motivation Solid waste management is the one of the important and major problem faced by today’s world. With the increase in commercial, residential and infrastructure development due to the population growth, it has lead to negative impact on the environment.. In developing countries like India, Solid waste management is considered as one of the most tedious environmental problems faced by municipal authorities . Rapid urbanization along with increasing industrial, economic and commercial development, have given rise to an increased generation of various types of waste.